During the brief appearance, Trump also claimed that “nobody” knows more about drones than he does.

“Having a drones and various other forms of sensors, they’re all fine but they’re not going to stop the problems that this country has,” Trump said. “Nobody knows more about drone technology than I do.”

Around the same time as Trump’s expedited press briefing, he shared an image on Twitter with a caption that borrowed from HBO’s “Game of Thrones.”

The caption, which appeared below an image of the president, said, “The Wall is Coming.”

The White House gave reporters little warning about Thursday’s briefing. White House press secretary announced at 4:07 p.m. ET in a tweet that there would be a briefing at 4:10 p.m. ET.